lossy

Thân thiện

The audio file was compressed using a lossy format.

Definition

1. Adjective:
   • Characterized by or causing a reduction in quality or quantity, especially of data or signal integrity, as a result of processing or compression that discards some information. This is the primary technical meaning, most commonly used in computing and digital signal processing.
   • Characterized by or causing dissipation of energy. This is a more general scientific meaning, referring to systems where energy is lost, typically as heat.

Usage and Examples

• In computing and data compression:
  • JPEG is a lossy compression format for images, meaning some detail is permanently discarded to reduce file size.
  • Converting an audio file to an MP3 using lossy compression will result in a smaller file but lower fidelity compared to the original.
• In physics and engineering (less common):
  • The electrical component was lossy, converting some of the signal's energy into unwanted heat.

Advanced Usage

• "Lossy compression": The standard technical term for data compression methods that achieve smaller file sizes by permanently eliminating redundant or less important information. The opposite is "lossless compression."
  • For archiving important documents, avoid lossy compression to ensure no data is corrupted.
• "Lossy medium": A material or environment (e.g., a poor electrical conductor) that causes significant energy loss as a signal passes through it.
  • Radio waves attenuate quickly in a lossy medium like seawater.

Variants and Related Words

• Lossless (adj): The direct antonym. Describes compression or a system where no information or energy is lost.
  • FLAC is a lossless audio format that preserves the original sound quality.
• Loss (n): The general concept of something being lost, which forms the root of the adjective.
• Lossiness (n): The quality or degree of being lossy (a technical term).

Synonyms

• Degrading: Causing a decline in quality (general synonym for the effect).
• Compromising: Involving a trade-off where something is given up (e.g., quality for size).
• Dissipative: Causing energy to be dissipated (closest synonym for the physics meaning).

Antonyms

• Lossless: Preserving all original data or energy.
• Fidelity-preserving: Maintaining exact quality or detail.
• Conservative: In the context of systems, one that does not lose energy or information.

Học thuật

Adjective

1. characterized by or causing dissipation of energy